Set the Default Start Page for All Users
In a new site, when users sign in to the Tableau Online web authoring environment, they are taken to the Home screen, which displays a role-based welcome banner. Home also displays recent views, favorites, and the site's most-viewed content. As the administrator, you can change users’ default landing page at the site level. For example, you can show all workbooks, and when the user signs in, they see the workbooks they have access to.
To set the default start page for all users
Display the page or filtered view you want to be the default page users see when they sign in to the site.
Select your profile icon in the upper right area of the page.
To set the start page for all users on a site, click Set as Start Page and For Users on this Site.
User-set start pages and hierarchy
Users can set their own start pages from their profile icon, and can reset their start pages in their account settings
If a user sets their own start page, it will override any start page set for the site. The next time that user signs into Tableau Online, they will land on the start page that they've set. If neither a user or an administrator has set a start page, users will default to Home.